Drill.



N9. v17,992.- PATENTED JAN. a, 1903. G. W. HAYS & J. E. DOUGLAS. DRILL.

APPLICATION FILED OUT. 21. 1901. RENEWED AUG. 16, 1902.

' no MODEL.

mums? wmvsssss //v VEN r09 Gear A TTOB/VEYS UNTTED STATES PATENT OFFICE.

GEORGE W. HAYS AND JOHN E. DOUGLAS, OF BIRMINGHAM, ALABAMA.

DRILL.

SPECIFICATION forming part of Letters Patent No. 717,992, dated January 6, 1903. Application filed October 21,1901. Renewed August 16,1902. Serial No. 119,913. (No model.)

To a whom, it may concern:

Be it known that we, GEORGE W. HAYS and JOHN E. DOUGLAS, residents of Birmingham, in the county of Jefferson and State of Alabama, have made certain new and useful Improvements in Drills, of which the following is a specification.

This invention is an improvement in drills, being in the nature of a hand-drill havingits handle-lever provided with pawl-points for operating the drill head or socket, and also provided with a feed arranged for controlled operation in connection with the hand-lever; and the invention consists in certain novel constructions and combinations of parts, as will be hereinafter described and claimed.

In the drawings, Figure 1 is a top plan view of a drill embodying our invention, and Fig. 2 is a vertical longitudinal section thereof.

The drill-head A is provided with a socket A, fitted to receive standard drills, has in its upper end a socket A for the feed-nut, and is provided 'a short distance below its upper end with a circular portion A within which op-.

erate the pawl-points of the hand-lever B, such portion A beingpreferably grooved circumferentially, as shown at A, so the pawlpoints I) and b can operate in said groove A, as will be understood from Figs. 1 and 2. The groove A like the groove E presently described, is sloped outwardly or diverges, and the pawl-points operating in said grooves are correspondingly formed, so that in the operation of the device the pawl-points will bind in their grooves in the direction of length of the points as well as circumferentially, thus increasing the binding action and the certainty of the operation of the device.

Bearing portions'are formed at A above and below the drum portion A and receive the jaws G and O, in which the drill-head journals, as shownin Fig. 2. The jaws C and C are provided at C with openings for the pin G, whose central portion G is eccentric and operates in an opening in the handle-lever 13 and may be operated by rotary adjustment to take up wear. The portions G of the pin fit in the jaws, and its threaded ends receive the retaining-nuts, the upper one of which secures the feed-lever D, presently described. The socketA maybe supplied with oil to ease the operation of the head upon the nut, the nut being made to fit snugly within its socket, so the parts may be freely turned when properly lubricated.

The hand-lever B is provided near its pawlpoints and on its opposite sides with turnbuttons I and I, which may be turned, as indicated in dotted lines, Fig. 2, and at I in Fig. 1, to overlap the jaws and so limit the movement of the pawl-points in one direction or the other to turn the drill to the right or the left, or both turn-buttons may be set to overlap the jaws when it is desired to operate the handle without turning the drill-head, as may be desired in some instances in releasing the feed. In Fig. 2 we indicate the two positions of the turn-buttons in dotted lines.

The feed-nut E has a threaded socket to receive the feed-screw F and is provided with a portion which fits and turns within the socket A? in the upper end of the drill-head. The nut E is also provided with a circular portion or drum E immediately above the drill-head, against which operate the pawlpoints d and d of the feed lever E, the drum E being preferably grooved circumferentially, as shown at E The feed-lever D is pivoted upon the pivotpin G and has its pawl-points arranged to engage the circular portion or drum E of the nut E and may be adjusted on its pivot to cause either one of the pawl-points to operatively engage with the drum, the handle end of the lever D being arranged to overlie the handle-lever and being provided with depending fianges D, which operate to limit the movement of the feed-lever in one direction or the other. In operation the feed-lever can be readily shifted from side to side in operating the lever B. It will be noticed that the pawl-points operate as binding-pawls, no ratchets being provided or necessary.

In operation it will be understood that the feed-screw F may bear at its end F against a suitable abutment, so it will operate to feed the drill in or out, according to the direction in which the nut E is turned by its operatingpawl. As the lever B is operated to turn the drill the feed-lever may be operated at the same time to feed the drill.

It will be understood that the turn-buttons I and I operate as stops to limit the movement of the hand-lever in one direction or the other. It will be noticed that the drill can be operated in close quarters, as the pawlpoints will catch at any length of stroke, can be readily operated either right or left, can be fed at the same time the drill is operated, thus avoiding any loss of time to set the feedscrew, and that the drill as a whole has all its parts held together, the feed-lever by fitting in the groove of the feed-nut preventing the displacement of the feed devices, as will be understood from Fig. 2.

It will be understood that the feed of our drill is a controlled feed, the lugs D facilitating the throwing of the feed into one or the other position by the finger or thumb of the hand grasping the lever B. The feed automatically releases, as when if the feed is thrown in by the finger or thumb and the lever swung in operation on the return movement of the lever if the finger or thumb be released from the feed-lever the latter will adjust back automatically to a neutral position. It will be noticed also that our feedlever is carried by the main lever and is movable with and independently of said lever, so the feed can be operated or not, as desired. It will be noticed that our feed-screw F is pro vided at its outer end with points F,which will bind against a back bearing, and that the screw does not turn in the operation of the drill, the feeding being effected by turning the feed-nut, as will be understood from the foregoing description.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is

l. The drillherein described comprising the drill-head provided in its upper end with a socket for the feed-nut and upon its outer side below said end with a circular portion or drum for the lever, said drum being grooved circumferentially, the jaws having openings receiving said head above and below the drum, the operating-lever fitting at its inner end between said jaws and having at said end pawlpoints to engage the drum and opposite turnbuttons for limiting the movement of the operating-handle in either direction, the pivotpin held to the jaws and provided with an eccentric portion fitting within the operatinglever, the feed-nut fitting in the upper socket of the drill-head and having a circumferentially-grooved drum or circular portion for engagement by the pawl-points of the feedlever and provided with a threaded socket for the feed-screw, the feed-screw operating in said socket, and the pivoted feed-lever having at one end pawl-points operating in the groove of the drum on the feed-nut and provided at the opposite end of said feedlever with stop-flanges lying on opposite sides of the operating-lever, substantially as set forth.

2. The combination with the drill-head and the jaws, of the operating-lever,and the turnbuttons on the opposite sides thereof and arranged for adjustment to engage the jaws whereby the movement of the lever in either direction may be limited substantially as set forth.

3. The combination with the drill-head, the jaws, and the operating-lever having pawlpoints for engagement with the drill-head, of the pin connecting the jaws and operatinglever and having an eccentric portion operating in said lever substantially as set forth.

4:. A drill comprising the drill-head having a drum and provided with a socket for the feed-nut, the feed-nut having a drum and provided with a threaded bearin g for the feedscrew, the feed-screw, the jaws having bearings for the drill-head, the operating-lever having portions for engaging the drum of the drill-head and provided with the stop devices, the pin connecting the jaws and operating-lever and having an eccentric portion fitting in said lever,and the feed-lever pivoted on said pin substantially as set forth.

5. The combination in a drill of the drillhead having a socket closed at its inner end, the feed-nut fitting in said socket and closed at its inner end and having a threaded socket for the screw and the screw threaded in said socket and means for operating the feed-nut, substantially as set forth.

6. The combination of the drill-head, the main lever for operating the same and the pivot-stud for said main lever having an eccentric portion receiving the lever, substantially as set forth.

7. The combination with the main lever, of the feed-lever pivoted in connection with the main lever and having its outer end provided with portions extending adjacent to and alongside the opposite edges of the handle, the latter lying between said portions of the feed-lever, and the head and nut arranged for operation by said main and feed levers,

substantially as set forth.

8. The combination of the head having a drum provided in its upper end with a socket for the feed-nut, of the feed-nut havinga portion journaled in said socket, and a drum overlying the head, the feed-screw threaded in the nut, the jaws pivoted on the head, the handle pivoted to the jaws, and provided with opposite pawl-points arranged to engage the drum to operate the head in opposite directions, and the feeding-lever having the opposite pawls to engage the feed-nut and pivoted to the jaws and having an extension alongside the handle for controlled operation, substantially as set forth.

9. The combination of the head having a drum, the jaws pivoted on the head, the handle pivoted to the jaws and provided with the opposite pawl-points for engagement with the drum to turn the head in one or the other direction, and the stop devices for limiting 10. The combination With the head, and throw either of its pawl-points into operative IO the feed devices having a drum, the handleposition whereby the feed may be operated lever provided with means for operating the in either direction, substantially as set forth. head, and the feed-lever having the opposite 5 pawis which may be adjusted alternately into engagement with the drum of the feed de- J vicesto operate the same in either direction Witnesses: and means under the control of the operator J. H. HEINEKE, whereby the feed-lever may be adjusted to GRACE T. HEINEKE. 

